What are Fibroids?
Fibroids are benign masses that develop from the cells forming the muscular layer of the uterus. They are common in women of reproductive age. Fibroids that grow towards the outer surface of the uterus are called subserosal, those within the uterine muscle are called intramural, and those growing towards the uterine cavity are called submucosal fibroids. The number, size and location of fibroids can vary from patient to patient. Some fibroids remain the same size for a long time, while others may grow under the influence of hormones.
How do Fibroids Form?
The exact cause of fibroids is not known. Genetic predisposition, together with the hormones oestrogen and progesterone, is thought to play a role in their development. A family history of fibroids, being of reproductive age, starting menstruation at an early age, and obesity are among the factors that may increase the likelihood of developing fibroids. Fibroids usually shrink after menopause as hormone levels decline.
What are the Symptoms of Fibroids?
A significant proportion of women with fibroids have no complaints at all. When symptoms do occur, they may include heavy or prolonged menstrual bleeding, anaemia, pelvic pain, a sensation of pressure in the abdomen, frequent urination, and constipation. Fibroids affecting the uterine cavity can make it harder to conceive or increase the risk of miscarriage. However, not every fibroid causes infertility; its effect on fertility depends mainly on the fibroid’s relationship to the uterine cavity, as well as its size and number.
How are Fibroids Diagnosed?
Fibroids may be noticed during a gynaecological examination, and the diagnosis is usually made with ultrasonography. Saline infusion sonography or hysteroscopy (viewing the inside of the uterus with a camera) may be used to assess whether the uterine cavity is affected. When there are numerous or large fibroids, when surgery is being planned, or when ultrasonography findings are not sufficiently clear, magnetic resonance imaging (MRI) may be requested.
How are Fibroids Treated?
Treatment is planned according to the patient’s complaints, age, wish for pregnancy, and the number, size and location of the fibroids. Not every fibroid needs to be removed before IVF; the decision to operate should weigh the expected benefit against the scarring in the uterus and the risks associated with surgery. Fibroids that press on the inner uterine wall in particular may need to be removed before IVF treatment.
Fibroids that cause no complaints can be monitored regularly. Medications may be used to reduce bleeding and pain. Submucosal fibroids that distort the uterine cavity can usually be removed hysteroscopically. For other fibroids, laparoscopic, open, or, in selected cases, other surgical approaches may be considered.
